| 摘要:采用三维计算流体力学的方法，研究了结构参数对纯氧燃烧器用多喷孔引射器性能的影响。获得了结构参数对引射比和氧气不均匀度的影响规律，总结分析了获得最佳引射性能的结构参数。数值计算的结果还揭示了不同结构参数下多喷孔引射器内部气体的引射混合过程。采用新的设计准则可以在提高引射器性能的同时减小设计尺寸。 |
| 关键词: 多喷孔引射器 纯氧燃烧 结构参数 数值模拟 |
|
| Numerical Investigation on Performance of Multi-hole Ejector |
| Lan Jian,Lv Tian,Jin Yongxing,Liu Zhao,Zhou Jianming |
| Shanghai Marine Diesel Engine Research Institute, Shanghai 201108;Shanghai Stirling Engine Research Centre, Shanghai 201203 |
| Abstract:The influence of geometry parameters on the multi-hole ejector in oxy-fuel combustion was investigated by using the method of three-dimensional computational fluid dynamics. The results showed the influence of geometry parameters on ejection ratio and oxygen inhomogeneity. In accordance with the ejection performance, the best geometry parameters were obtained. Besides, the results also revealed the mixing process of the internal gas of multi-hole ejector under different geometry parameters. Substantial performance improvement could be achieved by using the best design parameters in multi-hole ejector, and the design size could be decreased. |
| Key words: multi-hole ejector oxy-fuel combustion geometry parameters numerical simulation |
